FREE: helianthus decapetalus / The Ten Petal Sunflower

The listing, helianthus decapetalus / The Ten Petal Sunflower has ended.

Ten-Petal Sunflower
Helianthus decapetalus
Aster family

Description: This native perennial wildflower is about 3-5' tall; it is erect and branches occasionally. The stems are light green, pale reddish green, or purple; the upper stems have short bristly hairs, while lower stems are glabrous and sometimes glaucous. The lower and middle leaves are opposite, while the upper leaves are alternate; they spread outward from the stems. The leaf blades are up to 7" long and 3" across; they are broadly lanceolate to ovate with long slender tips and sharply serrated margins. The upper surface of each leaf is dark green and rough in texture, while the lower surface is light green and nearly hairless. The petioles of the leaves are about ½–1½" long; they are somewhat winged near the leaf blade, but become more narrow toward the stem. The upper stems terminate in yellow flowerheads on naked stalks (peduncles) of varying length. Each flowerhead is about 2–3½" across, consisting of 8-12 ray florets that surround numerous disk florets in a central disk. The petal-like ray florets are bright yellow and oblong in shape, while the disk florets are yellow and tubular. The base of each flowerhead consists of several overlapping bracts. These floral bracts are light green, linear-lanceolate, and ciliate along their margins; they often curve backward. The blooming period occurs from mid-summer to early fall and lasts about 1–1½ months. Each fertile floret is replaced by a dark achene about 1/8" long (or a little longer) that is oblongoid and slightly flattened. The root system is fibrous and rhizomatous.

Cultivation: The preference is partial sun or dappled sunlight, moist conditions, and a rich loamy soil. Like other perennial sunflowers, this species may spread aggressively in some situations.

I am not counting how many seeds you will get I am just putting some in an envelope and sending. around 25-75 seeds.